network-manager problems
June 4, 2020 apt update installed two networking packages:
network-manager_1.14.6-2+deb10u1_amd64.deb
libnm0_1.14.6-2+deb10u1_amd64.deb
System:
Kernel: 5.4.0-33-generic x86_64
Desktop: MATE 1.24.0
Distro: Ubuntu 20.04 LTS (Focal Fossa)
Machine:
Type: Laptop System: Dell product: Latitude E6530 v: 01
After rebooting the laptop, the wireless access point(s) are no longer available in the Network Manager. The "Enable Wi-Fi" is checked. "Wi-Fi Networks" is grayed out.
Network:
Device-2: Broadcom and subsidiaries BCM43228 802.11a/b/g/n driver: wl
IF: wlp2s0 state: dormant mac: 3c:77:e6:7c:5d:7b
$ sudo ip addr
wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state DORMANT group default qlen 1000
link/ether 3c:77:e6:7c:5d:7b brd ff:ff:ff:ff:ff:ff
$ sudo nmcli
wlp2s0: disconnected
"Broadcom and subsidiaries BCM43228"
wifi (wl), 3C:77:E6:7C:5D:7B, hw, mtu 1500
$ sudo nmcli device show
GENERAL.DEVICE: wlp2s0
GENERAL.TYPE: wifi
GENERAL.HWADDR: 3C:77:E6:7C:5D:7B
GENERAL.MTU: 1500
GENERAL.STATE: 30 (disconnected)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
$ sudo nmcli radio wifi
enabled
$ sudo iwlist wlp2s0 scanning
wlp2s0 No scan results
$ sudo iwlist wlp2s0 accesspoints
wlp2s0 Interface doesn't have a list of Peers/Access-Points
$ sudo iwlist wlp2s0 ap
wlp2s0 Interface doesn't have a list of Peers/Access-Points
$ sudo iwlist wlp2s0 wpakeys
wlp2s0 2 key sizes : 40, 104bits
4 keys available :
Error reading wpa keys (SIOCGIWENCODEEXT): Operation not supported
$ sudo iwconfig wlp2s0
wlp2s0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=200 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:on
$ sudo rfkill list
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
CasperMD5CheckResult: skip
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-06-04 (4 days ago)
InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
IpRoute:
default via 192.168.1.1 dev wlp2s0 proto dhcp metric 600
169.254.0.0/16 dev wlp2s0 scope link metric 1000
192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.4 metric 600
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
NonfreeKernelModules: wl
Package: network-manager 1.22.10-1ubuntu2.1
PackageArchitecture: amd64
ProcEnviron:
LANGUAGE=en_US
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
Tags: focal
Uname: Linux 5.4.0-33-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
nmcli-dev:
DEVICE TYPE STATE IP4-CONNECTIVITY IP6-CONNECTIVITY DBUS-PATH CONNECTION CON-UUID CON-PATH
wlp2s0 wifi connected full full /org/freedesktop/NetworkManager/Devices/3 Drone 914c67d5-7b8c-41b2-89d0-0ce7bce3c858 /org/freedesktop/NetworkManager/ActiveConnection/1
eno1 ethernet unavailable none none /org/freedesktop/NetworkManager/Devices/2 -- -- --
lo loopback unmanaged unknown unknown /org/freedesktop/NetworkManager/Devices/1 -- -- --
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
running 1.22.10 connected started full enabled enabled enabled enabled enabled
Need to report that the Broadcom BCM43228 wifi card intermittently shows the Wi-Fi networks. It will show them only occasionally; usually after a cold boot. If the machine is rebooted, the Wi-Fi networks disappear. Can anyone tell me how to test a wifi card for hardware failure?